1 Samuel 26:4-6

4 So David sent out spies and learned that Saul had come to Hakilah.

5 Then David went to the place where Saul had camped. He saw where Saul and Abner son of Ner were sleeping. Abner was the commander of Saul’s army. Saul was sleeping in the middle of the camp with all the army around him.

6 David talked to Ahimelech the Hittite and Abishai son of Zeruiah. Abishai was Joab’s brother. He asked them, “Who will go down into Saul’s camp with me?” Abishai answered, “I’ll go with you.”